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Absorptive effects and power corrections in low x DGLAP evolution

Pelicer, M.R.; de Oliveira, E.G.; Martin, A.D.; Ryskin, M.G.

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Authors

M.R. Pelicer

E.G. de Oliveira

A.D. Martin

M.G. Ryskin



Abstract

We address a long standing problem concerning the scale behaviour of parton densities in the low x, low Q2 domain. We emphasize the important role of absorptive corrections at low x and use knowledge of diffractive deep inelastic scattering to exclude the absorptive effect from conventional deep inelastic data. In this way we obtain a significantly different low x behaviour of the gluon density, which is now much better described by linear DGLAP evolution. Accounting also for a second power correction, which arises from the freezing of αs at low Q2 , leads to an essentially flat behaviour of the low x gluon density.

Citation

Pelicer, M., de Oliveira, E., Martin, A., & Ryskin, M. (2019). Absorptive effects and power corrections in low x DGLAP evolution. The European Physical Journal C, 79(1), Article 9. https://doi.org/10.1140/epjc/s10052-018-6515-4

Journal Article Type Article
Acceptance Date Dec 12, 2018
Online Publication Date Jan 7, 2019
Publication Date Jan 7, 2019
Deposit Date Jan 16, 2019
Publicly Available Date Mar 28, 2024
Journal European Physical Journal C: Particles and Fields
Print ISSN 1434-6044
Electronic ISSN 1434-6052
Publisher SpringerOpen
Peer Reviewed Peer Reviewed
Volume 79
Issue 1
Article Number 9
DOI https://doi.org/10.1140/epjc/s10052-018-6515-4

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Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/

Copyright Statement
© The Author(s) 2019. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.





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